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J. MAGHAPPI'E & B. ,P. G. H. FAURE.

(No Model.)

CONTROLLING MECHANISM FOR PROJEGTORS.

Patented Feb. 9

Nrrnn STATES PATENT FFICE.

JOHN MAOHAFFIE AND ELIE F. G. H. FAURE, OF SCHENECTADY, NElV YORK, ASSIGNORS TO THE GENERAL ELECTRIC COMPANY, OF NEW YORK.

CONTROLLING MECHANISM FOR PROJECTORS;

SPECIFICATION forming part of Letters Patent No. 576,683, dated February 9, 1897.

Application filed April 11, 1896- To whom it may concern:

Be it known that we, JOHN MAOHAFFIE, a subject of the Queen of Great Britain, and ELIE F. G. H. FAURE, a citizen of the Re public of France, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful Improvements in Controlling Mechanism for Projectors, (Case No. 375,) of which the folro lowing is a specification.

' The present invention relates to controlling mechanism for projectors; and one object of the invention is to provide a single-handle mechanism for controlling the beam of light I 5 in both altitude and azimuth, either separately or simultaneously, the advantages of which are pointed out in our Patent No. 539,862, dated May 28, 1895.

A further object of the invention is to provide an operating mechanism which may be readily changed to suit the various conditions met with in installing apparatus of this character. For example, it may be desirable to have the vertical angular movement of the 2 5 operating-handle limited to a few degrees, on

account of the lack of space, or it may be desirable to have the operating-handle move through as great or even greater angular 'movement than the drum. This is accomo plished by mounting a sector of greater or less diameter on the horizontallymovable frame of the projector and securing thereto the operating-handle, with flexible connections extending from the sector to the drum. 3 5 By changing the diameter of this sector the vertical angular movement of the handle for a given movement of the drum will be changed. By mounting sectors on the drum and frame concentric with the center of movement and 40 arranging the flexible connections to work over them a further advantage is gained, for

4 an even actuating force is then required at alltimes to move the drum, whereas in other forms of connection the force exerted would 5 vary as the drum was moved.

The invention also has for its object to provide a projector which is light, simple in 0011- struction, not liable to get out of order, and cheap to manufacture.

In carrying out the invention a suitable Serial No. 5 87,235. (No model.)

base is secured to the top of the pilot-house or other support. Upon this is mounted a frame provided with two upwardly-extending arms adapted to support the drum between them by means of trunnions which are socured to either side thereof. Secured to the base of the frame and adapted to move there- .with is a projection extending into the pilothouse, and pivoted thereto is a sector provided with an operating-handle. Mounted on the drum are two sectors situated on either side of the center of the trunnions, and concentric therewith and between these sectors and the one carried by the projection are flexible connections, as Wire rope, for example. the handle upward an upward movement of the drum is obtained, and vice versa. To prevent excessive friction between the moving and stationary parts, rollers are mounted on the frame at suitable points. The frame and the projection being secured together, (the latter forming a support for the operating-handle,) a horizontal movement of the handle in either direction will cause a similar movement of the drum. It is very desirable in projectors of this class that the operating-handle be so arranged that its m0vement will indicate to the operator the direction of the beam of light.

In the accompanying drawings is shown an embodiment of our invention, in 'which- Figure 1 is a side elevation, partly in section. Fig. 2 is an end elevation with a part of the base in section, and Fig. Sisa sectional detail of the sector carried by the drum.

The drum A is mounted .by means of trunnions B B in the frame C, which is provided with upwardly-extendin g arms C C Mounted on a suitable support is a bearing D, provided with an inwardly-extending flange D. The lower part of the frame C has a tube or cylindrical portion C provided at its lower end with a fork to receive the sector E, the center of which is concentric with the center of movement of the operating-handle. Surrounding the tube 0 is a sleeve F, provided at its upper end with lugs F, engaging with the lower surface of the flange D and formin g half of the projector-bearing.

The frame These are so arranged that'by moving IOO C, extending outward, furnishes the top half of the hearing. The two halves are secured together by bolts an. To prevent the rotation of the tube C independent of the sleeve F, a set-screw b is mounted in the sleeve F and in frictional contact with the tube C. Mounted on the drum A and concentric with the trunnions B B, the center of movement of the drum, are two sectors G G, having grooves in which the wire ropes II II are adapted to work. These sectors are shown as being mounted on opposite sides of the drum and on opposite sides of the center of movement. The sectors are so constructed that they form the base of the trunnions, although this is not an important feature. It is desirable, however, that the surfaces over which the ropes II II run he concentric with the center of the drum in order to maintain an even tension on the operating-ropes II II. The rope II is secured to the sector G by means of a screw 0. The rope in passing downward runs over small grooved rollers I 1'1 These prevent undue friction between the wire rope and the frame and at the same time furnish a hearing, so that the rope may be connected to the proper side of the sector in order that a movement of the handle may give a corresponding movement of the drum.

The rope II is connected to the sector G, located on the opposite side of the drum A from the sector G and also on the opposite side of the center of movement. This rope runs over rollers J J J 2 in a manner similar to the rope II, and is secured to the sector E on the opposite side by suitable means, as a screw.

It will be noted that the two ends of each wire rope II II are secured to the sectors on the same side of a vertical plane passing through the centers of the trunnions and opcrating-handle, although they cross one another in so doing. This permits corresponding movement-s between the drum and the operating-handle.

The sector E is provided with two lugs E E in which are mounted stops K K, to limit the movement of the handle L, which is secured to the sector E by means of lugs c c and a pin d.

In assembling the operating mechanism the ropes H II are first secured to the sectors G G, and then brought down around the rollers I I I and J J J in such a manner that when secured to the sector E they impart movement to the drum in the proper direction. The sector E is then inserted in the fork and the ends of the ropes II II secured thereto, after which the sector E is pulled down and the pin M inserted in the fork, forming a bearing for the sector. For the purpose of taking up any lost motion a turnbuckle N is put in one or both of the ropes II II. By

connecting the drum with two flexible c011- nectlons situated as above described a positive movement both up and down is obtained,

and by securing the connections to surfaces concentric with the centers of movement an even tension in the ropes is maintained at all times.

The lamp mechanism to be used with the projector has not been described, for it does not relate to the invention. Any style of lamp, either hand or automatic feed, maybe used.

\Vhat we claim as new, and desire to secure by Letters Patent of the United States, is-

1. In a projector, the combination of a flexible connector secured to the drum for moving it upward, a second flexible connector also secured to the drum for movingit downward, and an actuating device common to both.

2. In a projector, the combination of a pluralityof sectors mounted 011 the dru1n,a sector mounted on the horiZontally-rotatable frame, and flexible connectors secured to the sectors on the drum and the sector on the frame in such manner that a movement of the horizontally-rotatable frame can be made without causing a movement of the flexible eonnectors, and vice versa.

3. In a projector, the combination of sectors secured to the drum, a sector secured to the horizontally-rotatable frame, flexible conn ections between the sectors on the drum and the sector on the frame, and an operatinghandle for imparting movement to the drum in a horizontal and vertical plane.

4. In aprojector, the combination of a flexible connection leading from a sector on the drum to a sector mounted on the horizontally rotatable frame, a flexible connection leading from a sector on the opposite side of the drum to the sector mounted on said frame, and a handle for operating the projector.

5. In a projector, the combination of sectors mounted on opposite sides of the drum, a sector mounted on a horizontally-rotatable frame, wire ropes from the sectors on the drum to the sector on the frame, rollers mounted on the frame, and a tubular portion through which the wire ropes extend.

6. In a projector, the combination of sectors secured to the drum, a sector carried by a horizontally-rotatable frame, and flexible connections between the sectors on the drum and the sector carried by the frame, the two ends of each flexible connection being secured to the sectors on the same side of a vertical line.

7. In a projector, the combination of sectors carried by the drum, a sector carried by thehorizontally-rotatable frame, flexible connections between the sectors on the drum and the sector on the frame arranged to cross one another, the ends of each connector being secured to the sectors on the same side of a vertical plane.

8. In a projector, the combination of a plurality of sectors, flexible connection between the sectors on the drum and a sector mounted IIO on the base, and means for taking up the lost for imparting movement to the drum in a 10 motion between the moving parts. downward direction.

9. In a projector, aplurality of sectors car- In witness whereof we have hereunto set ried by the drum and frame, a flexible conour hands this 31st day of March, 1896. 5 nection between one sector on the drum and JOHN MACHAFFIE.

a sector on the frame, for imparting motion ELIE F. G. H. FAURE. to the drum in an upward direction, and anitnesses: other flexible connection between the other B. B. HULL,

sector on the drum and a sector on the frame, A. F. MACDONALD. 

